Help Server Error

    Hello,
    My name is Allan,I like IndustrialCraft² and i would play with my friends but when I lauch the server I have that


    [SEVERE] Unexpected exception
    java.lang.NullPointerException
    at jg.a(ServerConfigurationManager.java:119)
    at xa.<init>(EntityTracker.java:27)
    at net.minecraft.server.MinecraftServer.s(MinecraftServer.java:210)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:430)
    at dn.run(SourceFile:492)
    Can someone help me ? Thank for your reading


    Hamster.